Multimedia data transmission device

The invention relates to a multimedia data transmission device, which comprises a first connecting end, a second connecting end, a first optical fiber and a second optical fiber, wherein the first optical fiber and the second optical fiber are connected between the first connecting end and the second connecting end. The first connecting end comprises a first body, an optical fiber coupling connector and a conduction part. The optical fiber coupling connector comprises a first photovoltaic conversion module and a first accommodating part used for connecting the first optical fiber and the second optical fiber in an insertion manner. The first photovoltaic conversion module comprises a first optical coupling part, a first light-emitting module, a first light receiving module and a first circuit board. The first circuit board is connected with the conduction part. The first body exposes the conduction part. The second connecting end comprises a second body and a second accommodating part used for connecting the first optical fiber and the second optical fiber in the insertion manner. The second body accommodates the second accommodating part and exposes the second accommodating part.